The production of A Dream of Red Mansions is almost synchronous with that of A Dream of Red Mansions. In other words, A Dream of Red Mansions appeared before it was completed. Zhi Yanzhai's comments were made during the creation of A Dream of Red Mansions. Fat criticism involves the thought, art, author's family background, material source and character evaluation of A Dream of Red Mansions, which is a standard and valuable redology material.
Zhi Yanzhai and others, the author of Zhipi, can be said to be the earliest Redology scholars. Therefore, from the day when A Dream of Red Mansions was born, the study of redology began.
Because of the large number of fans and researchers, Dream of Red Mansions is much more lively than Oracle Bone Inscriptions and Dunhuang Studies. During Guangxu period, the scholars in Beijing regarded the study of A Dream of Red Mansions as a Dream of Red Mansions. By the early years of the Republic of China, A Dream of Red Mansions had become a specialized subject, and scholars such as Cai Yuanpei, Wang and others began to study it systematically. After the May 4th Movement, Hu Shi and Yu Pingbo used modern textual research methods to study A Dream of Red Mansions, which made the study of redology a big step forward. Therefore, people call redology before the May 4th Movement the "old redology school" and the redology advocated by Hu Shi and Yu Pingbo the "new redology school".
The concept of A Dream of Red Mansions is very clear. It is generally believed that all the knowledge about A Dream of Red Mansions can be included in the category of A Dream of Red Mansions. Research on the theme and characters of A Dream of Red Mansions: the life of the author of A Dream of Red Mansions: the version of A Dream of Red Mansions, the interaction between A Dream of Red Mansions and other classic works, etc. , can be called redology. However, Mr. Zhou put forward his own unique viewpoint that the study of the thought and art of A Dream of Red Mansions cannot be included in the research scope of A Dream of Red Mansions. Only by studying the author, edition, comments of Zhi Yanzhai and the lost articles of A Dream of Red Mansions can it be regarded as a real Dream of Red Mansions.